Graviton Prison (重力刑務所 (グラビトンプリズン)Gurabiton Purizun) is a maximum-security holding facility for the most vile criminals in the galaxy. Prisoners are kept under a heavy-gravity field to limit their movements while giant warden robots patrol tirelessly. Even if a prisoner were able to escape, the entire prison sits at the mouth of a black hole, and it is impossible to leave without a ship outside to pick you up.

Fiction

Beast Wars Neo comic

Big Convoy's crew came to Graviton Prison in search of anAngolmois Capsule but found that the giant warden robots had malfunctioned due to the long time spent in heavy gravity and they believed the Maximals were prisoners, locking them up.

Using the prison's enhanced gravity to his advantage, Big Convoy threw himself into the air and gave a mighty stomp, tearing a hole in the floor of his cell. The Maximals escaped and located the capsule whileNAVI brought theGung Ho around for a pickup. The giant warden robots grabbed theGung Ho as it attempted to depart, but Big Convoy again kicked them, knocking them off into space—and into the black hole.The Great Escape! Graviton Prison!

Animated cartoon

Graviton Prison was located onD-4376 before the planet was destroyed.The AllSpark Almanac II

After the history ofMalgus 1207.26 Alpha was altered and fixed,Swindle never met the time-displacedWavelength and thus avoided a few centuries of incarceration in Graviton Prison.Ask Vector Prime, The Complete AllSpark Almanac